Charles Ellicott Commentary 1 Chronicles 4:2-4

"And Reaiah the son of Shobal begat Jahath; and Jahath begat Ahumai and Lahad. These are the families of the Zorathites. And these were [the sons of] the father of Etam: Jezreel, and Ishma, and Idbash; and the name of their sister was Hazzelelponi; and Penuel the father of Gedor, and Ezer the father of Hushah. These are the sons of Hur, the first-born of Ephrathah, the father of Beth-lehem." — 1 Chronicles 4:2-4 (ASV)

Branches and settlements of the Hurites.